4025155 has 4 divisors (see below), whose sum is σ = 4830192. Its totient is φ = 3220120.

The previous prime is 4025111. The next prime is 4025167. The reversal of 4025155 is 5515204.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 4025155 - 2⁷ = 4025027 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402511 + ... + 402520.

It is an arithmetic number, because the mean of its divisors is an integer number (1207548).

Almost surely, 2^4025155 is an apocalyptic number.

4025155 is a deficient number, since it is larger than the sum of its proper divisors (805037).

4025155 is an equidigital number, since it uses as much as digits as its factorization.

4025155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805036.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 4025155 is about 2006.2788938729. The cubic root of 4025155 is about 159.0721690233.

The spelling of 4025155 in words is "four million, twenty-five thousand, one hundred fifty-five".